Spring-saddle for feed-rolls.



E. J. VALBS. SPRING SADDLE FOR FEED ROLLS. APPLICATION FILED JULY 17, 1914.

Patented Mar. 2, 1915.

EDWABD J. WALES, OF AUGUSTA, GEORGIA.

SPRING-SADDLE FEED-ROLLS.

Mira-am Specification of Letters latent.

Patented Mar. 2, 1915.

Application filed July 17, 1914. Serial No. 851,534.

To all 20/) cm it may concern:

Be it known that I, EDWARD J. VALEs, a citizen of the United States, and a resident of the city of Augusta, in the county of Richmond, State of Georgia, have invented certain new and useful improvements in Spring-Saddles for Feed-Rolls, of which the following is a specification.

This invention relates broadly to spin ning and more particularly to the saddles for spinning frame feed r ls. I

The principal object of this invention is to provide a spring saddle capable of adj ustment from above the roll stand to vary the pressure on the feed rolls.

Another object of this invention is to provide a saddle controlled from devices above the roll stand in such manner as to render the saddle easily and quickly removable from above the feed rolls.

Another object of this invention is to construct a mechanism by means of which pressure upon the feed rolls can be varied at will by means of devices arranged above the roll frame.

A still further object of this invention is to provide a saddle capable of being maintained at a predetermined pressure. and constructed in such a manner as to be removed from over the rolls, the device then being capable of being returned to the former relationship without re -adjustment of parts.

A still further object of this invention is to provide a saddle supported by spring connections, thereby obviating vibrations due to the momentum of swinging weights.

Still other and further objects of this invention will be obvious and will in partbe pointed out in the specification hereinafter following by reference to the accompanying drawings wherein like parts are represented by like characters throughout the several figures thereof.

Figure 1 is an elevational view showing the spring saddle in position over the feed. rolls, which are illustrated diagraminaticallv. Fig. 2 is a perspective view of the spring and supporting bracket. Fig. is a detail view of the saddle. Fig. ":l: is a detail view of the adjusting T-bolt.

in the spinning art the upper feed rolls require a certain amount of pressure to maintain a proper feed relation between them and the under feed rolls, and the roving or thread. To obtain this pressure it is usual to provide the upper rolls with two rigid members arranged in overlapping relationship, comprising a front saddle and a back saddle. The front saddle is usually connected, by means of links and levers, with a weight, which is supported in a notch on the of a lever of a predetermined length. .llllS system is ob ectionable in that it 1nagnifies and transmits vibrations, caused by the running of the machine, to the upper feed rolls and thereby tends to cause an un even feed if the vibrations become excessive. Furthermore it is noted the weight system does not admit of delicate adjustment of pressure upon the feed roll, which is sometimes desirable, depending upon the condition of the roving orthread as it runs under the rolls. The weight system is still further objectionable in that the weight and levers, are back of the feed rolls and beneath the standards in such a manner that they are diilicult and dangerous to reach. if it becomes desirable to remove the saddles from over the top rolls as is sometimes necessary, and requires the machine to be stopped in order to perform this operation with safety.

This invention. which will hereinafter be described in detail, includes a. hinged support. that is clamped to the back of the roll stand, and which has hinged to the upper portion thereof. a long leaf spring. which extends over the upper rolls. This leaf spring carries a saddle that bears upon the upper feed rolls and includes a part that engages the front and middle rolls, this part carries a flexible, or hinged extension that bears upon the back roll. An adjustment screw comprising av T-bolt engages a hook upon the supporting bracket and co iperates with the leaf spring through a crank nut to maintain a predetermined pressure upon the spring saddle. By this mechanism it will be noted that vibrations due to the spinning frame are absorbed in the spring connections and are not transmitted to the feed rolls. enables the device to be immcdiatelv re leased bv loosening the crank nut and the leaf spring. The spring saddle can then he turned upward to entirely free the feed rolls so that an v desired manipulation of theupper rolls can be quicklv and easily performed.

Referring now more particularly to the drawings: the bracket 1 is adapted to be.

clamped upon the back rail 2 of the roll Furthermore the T-boltconstruction stand by means of a set screw 4. The bracket 1 is bifurcated at its upper end to receive a knuckle .3 which is hinged within the bifurcated part by means of a pivot or pintle 3. The knuckle. 5 carries a forwardly projecting leaf spring 7. This leaf spring is slotted as at 8 to receive an adjusting T- bolt 9 which has the head 10 thereof mounted between downwardly turned fingers 11 and carries at its upper end a pair of lock nuts 12, which are adapted to be locked in position beneath the leaf spring, thereby determ ning the degree of tension to be given the leaf spring when the crank nut 1a is run downwardly on the threads of the T- b'olt until the spring is tightly clamped between the upper lock nut 12 and the loose washer 15. The slot 8 is of a sullicient length to permit the parts to automatically adjust themselves to seat the washer 15 squarely against the upper surface of the leaf spring 7, thus obviating binding of the parts. The outer end of the leaf spring is illustrated as having a square opening 16 in which a square shouldered washer 17 is seated b means of the stub screw 18, that is threaded into the front saddle 19. The front saddle 19 is provided at its rear portion with av bifurcated part adapted to re eeive the knuckle 20 of the rear saddle 21, which is hinged in the bifurcated part by means of the pintle or pivot 22. The front saddle at its rear portion is provided with a rounded part 24 which forms the support for the short leaf spr ng 25. which is riveted to the rear part of the front saddle 19 and bears a ainst the upper part of the rear saddle 21 when the parts are assembled and the T-bolt adiusted to cause the leaf spring to press against the front saddle. The front and rear saddles exert pressure upon the upper feed rolls 26. Q7 and 98 to clamp these upper rolls against the lower feed rolls 30. 31 and 32, all of which feed rolls are ind cated more or less diagrammat cally in Fig. 1. The outer end of the leaf spring 7 is curved upwardl as at 34 in order to form a support for a slat such as at 35, which may suppo t a cover ng 36 of thin boards or other material when it is desired to cover up the feed rolls. In order to facilitate proper lubriea tion the saddles are provided with oil holes 37 and the bearing surfaces are slotted as at 38 to receive waste. or packing. to pro erly hold and distribute oil. The leaf spring 7 is also pro ided with oil holes 39 which enable the saddle to he oiled without removing the parts from the adjusted position.

It will he noted that the front and back saddles are attached together in such a man-' ner as to become substantially a. unitary structure and the eby each is secured to the leaf spring. which b comes a supporting member for the saddles, In view of this construction the feed rolls can be very easily cleared by loosening the crank nut 14 until the T-head 10 can be freed from the lingers 11. It then becomes possible to swing the entire saddle mechanism covering the rolls to dotted line position indicated in Fig. 1. This operation is extremely desirable when it is necessary to clear the feed rolls for any particular reason. It will also be noted that the relationship of the leaf spring 7 to the front saddle and to the spring which bears upon the rear saddle, is such that the leaf spring 7 can be tightened to distribute its pressure in a varying manner over the several feed rolls. Since ordinarily it is desired that the front feed roll 26 receive the heaviest pressure, the leaf spring 7 is constructed to bear on the front saddle nearest to this front feed roll thereby exerting the heaviest pressure against the front part of the front saddle.

It is obvious that my invention is capable of being embodied in structures other than the specific construction shown and described. therefore, I desire that the mechanism described shall be considered as illustrative and not in a limiting sense.

Having thus described my invention what I desire to claim is:

1. A device of the class described including in combination. a roll stand carrying feed rolls, a clamp adapted to be mounted upon the back rail of the roll stand, a long leaf spring hinged to said clamp, a pair of fingers formed on said clamp, an adjusting bolt passing through a slot in'said leaf spring, a T-head on said bolt in engagement with the said fingers, a pair of lock nuts below said spring and adjustable to act as a stop, a crank nut above said spring capable 'of operation to determine the amount of pressure said spring is to Work under, and a-saddle carried by the free end of said leaf spring. said saddle bearing upon certain of said feed rollsf combination, a clamp adapted to engage the back rail of a roll stand carrying feed rolls, a long leaf spring supported at one end by said clamp. a saddle mounted on the other end of the leaf spring. said saddle compris ing a front portion andarear portion hinged to the front portion. a short spring carried by the front portion and. bearing against the rear portion. said saddle bearing on cer tain of the feed rolls. and means to regulate the pressure of the long leaf spring against the saddle. 1

3. A device of the class described including in combination. a roll standprovided with under feed rolls and upper feed rolls resting upon the lower feed rolls. a. long leaf spring extending over the upper feed rolls. a support for one end of said spring, a saddle carried by the other end "of said spring and resting upon said upper feed rolls, said saddle comprising two portions hinged together, and adjustable means capable of being operated to regulate the pressure exerted by said saddle upon the upper feed rolls. I

4. In a device of the character described in combination, a roll stand, a support at the rear of said roll stand, feed rolls operatively mounted in said roll stand, said feed rolls including upper and lower rolls, a saddle cooperating with said upper feed rolls, a member carried at one end by said support at the rear ofthe lower stand and cooperating at the other end with said saddle, and adjustable means intermediate said support and said saddle for adjusting the pressure exerted on said saddle by said member. 1

5. In a device of the character specified In combination, a support, a leaf spring hinged to the support, a saddle adapted to rest upon the top feed rolls of a roll frame, and adjusting means connected to said leaf spring and capable of operation to exert pressure thereon to cause the leaf spring to exert a yielding pressure upon the saddle on the top feed rolls.

6. A device of the class specified including in combination, a clamp adapted to be secured to the back rail of a feed roll stand,

a long leaf spring hinged to said clamp to be capable of being swung upward and rearward, a saddle carried on the free end of said leaf spring and resting upon the top feed rolls, and an adjustable connection between the leaf spring andthe clamp to regulate the pressure upon the feed rolls.

7 A device of the class described including in combination, plurality of feed rolls, a saddle including portions hinged together, one portion of said saddle bearing on a plurality of feed rolls and another portion of said saddle bearing upon a single feed roll, a spring tending to flex said hinge, and a heavier spring bearing upon said saddle to force the saddle against the feed rolls and operating in opposition to the first mentioned spring.

8. A device of the class described including in combination, a roll stand, a saddle bearing upon certain rolls in said roll stand, a spring member carrying said saddle, a hinged. support for said spring member to enable said memberto swing upwardly to remove said saddle from said feed rolls and to support said saddle when so removed.

- EDWVARD J. VALES. \Vitnesses:

JAMns T. BIsHoP, DAVID N. Gnssou.

a roll stand bearing a 

